What does "odds" mean in Path of Exile?

What does "odds" mean in Path of Exile? - A Path with Fallen Leaves Between Trees

I am a beginner. I saw this word on a Reddit /r/pathofexile post.

I've searched on google for a long time, but I still don't know its meaning well. Can you explain it to me?

terminology path-of-exile

Pictures about "What does "odds" mean in Path of Exile?"

What does "odds" mean in Path of Exile? - Path in Tropical Forest to Ocean

What does "odds" mean in Path of Exile? - A Grayscale Photo of Trees Near the Road

What does "odds" mean in Path of Exile? - A Modern Building Near the Body of Water Under the Cloudy Sky

Orb of Chance and \

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Images: Alexey Demidov, Jess Loiterton, Alexey Demidov, Magda Ehlers